Lifting-truck



Patented June 1 1, 1921.

3 SHEEISSHEET I.

w. STUEBING, m. LIFTING TRUCK.

APPLICATION FILED OCT. 16. 1915. 1,381,515.

Witnesses 3 7141 W. STUEBING, In.

UF'HNG TRUCK.

APPLICATION HLED OCT. 16. 19l6.

Patented June 14, 1921.

3 SHEETS-SHEET 3- at the city Hamilton UNITED STATES PATENT OFFICE.

WILLIAM ST'UEBING, TIL, F. CINCINNATI, OHIO, ASSIGNOR TO THE STUEBING TRUCK COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

LIFT IN G -TRUCK.

Application filed October 16 To all whom it may concern:

Be it known that 1. WILLIAM Sronnlno, Jr., a citizen of the United States, residin% of Cincinnati, in the county 0 and State of Ohio, have invented certain new and useful Improvements 1n Lifting-Trucks, of which the following is a specification.

r 1 My invention belongs to that class of lifting trucks which are formed of a. lower and upper frame, the lower frame mounted on wheels and the upper frame capable of being elevated bv means of a lever or handle on the lower rame; also provided with means for locking the upper or elevat ng frame or platform in its elevated position and means for releasing the elevated platform from its elevated position, so that it may be lowered.

The object of my invention is to incorporate and combine together. mechanical parts and movements, that. will ovolve a lifting truck of this character, which shall be the most simple in construction. the most. efiicient in use. the most unique and easily operated and the most dependable for constant use.

The front wheels and handle of my new lifting truck are swiveled or pivotally connected and arranged that they may he turned in either direction oi entirely rcvolved around in the arc of a circle or in a complete circle. so that my lifting truck can be operated in any place or under any conditions.

Its various features and ad\-'anta; es will readily become apparent from the following specification.

In the accompanying drawing forming part of this specification,

Figure l. is a plan view of my new lift ing truck, A

Fig. 2, is a side elevation of the same,

Fig. 3. is an enlarged view of the forward part of the truck shown in Fig. 2, the mechanism. however. being in a different. position.

Fig. 4. is an enlarged view of Fig. "l, partly broken away and in section. to illns trate construction. a V v Fig. 5, is a similar icng loi tliai; shown in;

Specification of Letters Patent. Patented June 14, 1921.

, 1916. Serial No. 126,014.

the lifting mechanism disengaged, and

locking mechanism disengaged,

Fig. 9, is an enlarged plan View of one of the hooks used by me at forward part of the truck.

Fig. 10, is a front truck, and

Fig. 11 is a detail vertical transverse section on line 11--11 of Fi f. 7.

The truck is composed of a lower frame mounted on wheels, and an upper frame mounted on said lower frame and capable of being elevated and lowered thereon.

The lower frame is composed of bars or side pieces 1-] joined at .front by means of head 2 and fastened at the bearing points 5 and 4 on both sides; the head 2 extends downwardly and rearwardly as shown in Figs. 1 and 2 and the points 3 and 4 are shown on this extension of the said head 2; and at the rear said bars are joined by the axle 5 and also strengthened at rear by the brace (i as shown in Figs. 4 and 5. This lower Frame is mounted on rear wheels 7 and front wheels 8. On the shaft 5, I laco a pair of links 9; these links cxten upward and over the rear wheels 7 as shown in Fig. 1. In the upper part of links 9, I connect. the shaft 10, which passes through links 9, as shown.

The upper frame is composed of the side bars or rails 12-12 which at rear are conview looking at the net-ted to the shaft 10, and at front are connected by means of studs 13 and links 14 to the head 2, by means of pins 3 so as 16. (see Fig. 1). 1

In the head I place the bearing 17 and in lthis hearing ,lswivel .or revolve a fork; 19 ,At the "iawe; .etidqof fork 18 Hit) der 23 which supports head 2 on fork 18,

- arms or extensions 36 and 37; t

tending lug 30-30 and at its u per end I allowing same to swivel, turn or revolve. At a point 24 in forklfi, I place'a pin 25, thus locking the fork in the head 2, at the same time'allowing it to revolve freely in bearin 17. m

' In t e u per end of fork 18 I carry the bearings 2 and 27 and in said bearin I provide bolt 28 and between said bearings 26 and 27 I lace the handle 29 held pivoted in lace y the bolt 28. At the lower end of audio 291 extendtwo short lu place a hen e bar 31; thus it wil be seen thatthe handle 29 is securely connected to the front wheels and revolves with them and can also be moved up and down at any time, also dur'-. ing) the revolution of the wheels.

n the saddle 16, I place the bearings 32 and 33 and between them I 'place and pivotall connect awl or hook 34,. by means of shaft 35. his pawl 34 is double or U-shaped having two outwardl extending ese arms at their extremity have hook shaped heads 42, as shown in Figs. 3 and 7.

On the handle 29, in lugs 30-30, I place the pin 38, which pin extends beyond said 30-30 and .t \ese extensions at each sir e. form en agement bearing oints 39, see Figs. 1 snail 7, so that when tie handleis in an upright position the bearing points 39 will engage the curved hook parts or heads 42 atthe end of the'arms 36 and 37 of the pawl 34, when pressure is brought on the foot treadlc, see Fig. 6, to be hereafter described.

On shaft or pin and on the outside of bearing 33, I pivotally connect the small hook 40. This hook has an extending arm 41, (see Fig. 9), which extends .in and un der the large hook or pawl 34, as shown, and its forward end'has a hook part 40', see particularly F ig. 11, which engages hook part on permanent hook 49.

At the opposite side of hook 40 I place an extension 43.

On the head 2 I provide an upwardly ex- 44 which carries a pin 45 and. on this pin I pivotal'ly'connect'the foot trcadle 46, which has a rearwardly extending arni 47 and a forwardly extending arm or foot pad 48. The part 47 extends under the extended portion 43 on hook 40 (see Fig. 7), thus it can be'seen that whenpressure is put on end 48 of the treadlel46, it will bring extension 47 in engagement with hyphlg 5. cylinder 56 through an opening in plug 58.

hook 40 and its extension 43 to raise the largepawl 34 by means of extension 41 on said hook 40 and connect it with the handle as shown 'in Fig.6, when the elevating platform is in its lowest position.

At top surface of head 2, I

70 lace the holding hook 49, fastened securey to the same and placed in line with the hook 40 (see Figs. 1 and 7); so that, when theelvated Jlatform is in raised position, the small ook 40 engages the holdin hool'r 49 and thus holds the elevated plat orm in a locked elevated position, (see particularly will now describe a fluid check mechani s which I usein connection with my lifti g truck. On the ieghr side of saddle I 16-oii the up er platform, I have n lug 50 and at the ront side of this brace 6 on lower platform, I have double lu s 51 and 52. Connected. to lug'50 I have Fork bearing 53, to which piston rod 54 is connected. Between th lugs 51 and 52 I pivotally eonmeet by pin 55 the cylinder 56 closed at its rear end b plug 57 and at' its forward end the piston rod 54 passing into it the lower end of rod 54. I connect the piston 59 which has any suitable or ordinary valve mechanismconnected therewith. Between plug 58 and piston 59, I; compress a curved spring 60, The cylinder 56 is filled with liquid, preferably .011, thus causing a checking mechanism governed by the valve in the piston, allowing the elevating plat-' form to lower itself without jar. When it is desired to use the truck it is placedunder the object to be elevated and trucked or under a platform, made for this purpose onto which the goods to be trucked are piled. After the truclf is in its proper POSItiOIl, the handle is now in an upward or upright position and the lifting or elevating platform is in a lowered position as shown'in, Fig. 2, the operator now steps on the treadle 46, this connects the large hook or pawl 34 with the bearing ends 39 on handle 29 through the medium-of the hooked ends or heads 42 of, arms 36 and 37 being entered by the said bearing ends 39, (see Fig. 3); the handle is then lowered thus pulling. up the elevating platform with its lead, until the hook. 40 engages the permanent hook 49 on the head 2 (as shown in Fig. 5) thus the elevating platforln is locked and held in a locked elevated position. By lifting the handle 29 the pawl 34 is automatically disengaged fromsaid handle, (see Fig. 5); and the frontwheels and their supporting frame and the handle can be turned to the right orleft in the ,arc of a'circle or completely revolved in a circle. 7

In order to make the above operation more clear, it may bestatedthat'when it is desired to raise the eleveting'platform, the

(ill

operator lifts or raises the handle 29 to a vertical position and at the same time steps on the'part 48 of the treadle 46. This operation raises the hook 40, which in turn, through the i'igenc r of its arm 41, raises the large pawl H by coming in contact with arm 37 of said pawl until the hooked ends .or heads -l2 of said pawl are engaged by the bearing ends 39 of the handle;the operator with his foot still on the treadle to hold up the pawl 34, then pulls down the handle to force an engagement between said bearing ends 39 and the hooked heads 42 of the pawl (to prevent the pawl 2-34 from falling away from the bearing ends on thehen dle), and when this is done he can continue to pull down the handle and elevate the lifting or elevating platform.

When the elevating platform is in a raised position, the links t-l are at right angles to the bottom frame 1, 1, of the truck, thatis, on dead center, thus making it easy to lock the load. In order to release the elevated platform when locked and in its his hest position and held by hook 40, the treadle it, is again depressed by the operator; this disconnects said book 40 from permanent book 49 on the head 2' (see Fi 8); this allows the spring (30 in the cylinder 56 to relax therein and either give the lifting platform an initial impetus or pull it down.

lhis check mechanism is the subject of a separate application and is now pending in the l'nited States Patent ()ilice'as Serial No. some. a

While I have described one specific form of carrying out my; invention, it will be readily understood that the same is capable of change and modification without departure from the principle and spirit of the invention, and I wish to he understood as claiming that such modifications will still fall within the scope of my invention.

What I claim as new and my invention aml desire to secure by Letters Patent is:

I. In an elevating truck. in combination, a base, an elevating platform, a front steering wheel having a swivel connection with said base, a steering handle pivoted to rock upon tbc free upper part of said swivel and having an unlimitcd range of steering movement. and means for connecting said latl'orm to said handle to elevate said plat orm comprising a number carried by one of said parts and tending normally to remain in or to return to a position in which it will not interfere with the movement of said handle, the connections bctu'ccli said member and thc othcr part being constituted by coiipcrating engaging surfaces on said member and said part so arranged with respect to the direction of elevating movement as to form a positive platform elevating connection, and also by coi'iperating surfaces preventing-movement of said member away from connected relation to said part, said" last mentioned surface being in such rel-a tion to said first mentioned surfaces that movement of the handle in the direction to '="n disengage said first mentioned surfaces-also effects relative movement of said last melt tioned surfaces outof member-supporting iclation. y

2. 'In a lifting truck, ing forward and rear wheel members,

a lower frame hava lifts ing platform mounted on said lower frame and adapted to be moved up and down with respect thereto, the forward wheel member" consisting of a rotatable frame swiveled in'T said lower frame and carrying the forward" wheels, a handle lever, pivoted to said ro tatable frame, for raising the lifting plat;

form, a pivoted memberon the lifting pla tform, means on said handle-lever for detachable en agement with said pivoted member, a tread leon the forward end of the lower frame, a, )ivoted hook member on the' for:

ward end of the lifting platform, said treadle adapted to be brought into'enga e 'go ment with said pivoted member toraise be same, said pivoted hook member having r portion nda-pted to be brought into engage i ment, by the 'raisim of said hook member; with the first-named pivoted 'member -\\"l1eif'f 5 the platform is in lowered position" to raise said pivoted member into position to be en gaged by said handle lever, a hook on the forwardpart of the lower frame'ada 'itedto" he engaged "by said pivoted hook membefmn to hold the lifting platform in elevated po sition, said pivoted hook member adaptett to be discngageihfrom said book by said) treadlc to permit the platform to descend! 3. [n a lifting'trnck, the combination witl", a wheeled base frame and an-elevating'frimie and a pivoted steering handle, of means for connecting said elcvatingframe to said ha dlc to elevate said elevating frame,- compr ing a manually operable member connector to one of said parts and tending to move out" of connected relation to the other. intof a position where it will not interfere with the movement of said handle when nsbdffoi? steering. in combination with trcadlc and" locking means. the trcadlc means moving said member into position for effecting a connection with said other part aml said locking means positively locking the elevating frame to prevent deconnecting said elevating frame to said ha ndle to elevate said elevating frame, comprising a manually operable member connected to one of said parts and tending to move out of connected relation to the other, into a position where it will not interfere with the movement of said handle when used for steering, in combination with treadle and locking-means, the treadle means moving said member into position for effecting a connectionwith said other part and said locking means positively locking the elevating frame to the base rame to revent descent, before the'manually op'eralile member and the other connecting part are disconnected'; said treadle means also being capable of releasing said elevating frame from its locked position that the'same ma descend, said treadle and locking means eing independent of the handle and of said manually operable member.

5. In a-liftin truck, the combination with a wheeled base rame and a pivoted steering handle, of means for connecting said elevating frame to said handle to elevate said elevating frame, comprismg a manually operable member connected to one of said parts and tending to move out of connected relation to the other, into a position where it will not interfere with the movement of said handle when used for steering, in combination with treadle and locking means, the treadle means moving said member into osition for effecting a connection with said other )art, the move ment. of the handle in, a irection to disconnect said manually operable member and said other part effecting an automatic (lisconnection therebetween, and the said locking means positively lockingthe elevating frame to the base frame to-prevent descent, before the manually operable member and the other connecting part are disconnected; said treadle means also being capable of releasing said elevating framefrom. its locked position that the same ma ,desoend, said treadle and locking means eing independent of the handle.

6.. In a lifting truck, the'combination with a wheeled base frame and an elevating frame and a pivoted "steering handle, of means for connecting said and an elevating frame elevating frame to said handle to elevate said elevating frame, comprising a manuall operable member connected to one of-said parts and tending to move out of connected relation to the other, into a position where it will not interfere with the movement of said handle when used for steering, in combination with treadle and locking means, the treadle means moving said member into position for effecting a connection with said other part, the movement of the'handle in a direction to disconnect said manually operable member and said other part effecting an automatic disconnection therebetween, and the said locking means positivelylocking the elevating ranie to the base frame to prevent descent, before the manually operable member and the other connecting part are disconnected; said treadle means also being capable of releasing said elevating frame from .its locked position that the same ma descend, said treadle and locking means eing independent of the handle and of said manually operable member. a

7. In a lifting truck, the combina tion with 'a 'w eeled base frame and an elevating frame and a pivoted steering handle, of 'means for connecting said elevatin frame to said handle to elevate said e evating frame, comprising a manual! operable member connected to one of sait parts and 'tending to move out of connected relation to the other, into a position where it will not interfere with the movement of said handle when used for steering, in combination with -t'readle and locking-means, the treadle means moving said memberinto position for effecting a connection Wilih'slild other art and said locking means positively loc ring the elevating frame to the base frame to prevent descenhsaid treadle means also oelng'capable of releasing said elevating frame from its locked position that the same ma de- 'scend, said treadle and locking means ing independent. of the said manually operable member. Witness my hand at Cincinnati, Ohio, July14th, 1916.

, WILLIAM STUEBING, Ja. I Witnessesz SYLVIA Waiwsrnonna,

E 0mm. 

